What is TRICARE Step Therapy? | 2026 Pharmacy Guide | TRICARE.com

*TRICARE.com is an independent reference site and is not the official TRICARE program. For official policy and the most current data, visit TRICARE.mil.*

## Definition Step therapy is a TRICARE pharmacy policy that requires you to try one or more lower-cost "preferred" drugs (such as generics) to see if they work for your condition before TRICARE will cover a more expensive brand-name medication.

## What it means in practice Step therapy—often called the "fail first" requirement—is a cost-containment strategy managed by **Express Scripts** for TRICARE. When a doctor prescribes a medication that is subject to step therapy, the pharmacy's computerized system checks your TRICARE prescription history. If the system does not see a record of you trying the preferred, lower-cost alternative first, the claim will be automatically denied at the pharmacy counter.

For example, if you are prescribed a high-cost brand-name drug for acid reflux, TRICARE may require you to first try a generic version or a different class of medication that is proven to be safe and effective. If the generic works, you continue using it, saving both yourself and the Department of Defense money. If the generic fails to control your symptoms or causes adverse side effects, your doctor can then submit a "medical necessity" or "prior authorization" form to Express Scripts to move you to the next "step" in the treatment ladder.

As of 2026, step therapy primarily affects brand-name drugs in specific categories like specialty biologics, sleep aids, and certain blood pressure medications. If you are a new TRICARE beneficiary and were already taking a brand-name drug before joining, you may still be required to go through step therapy unless your doctor can document that the preferred alternatives are medically inappropriate for you.

Financially, the difference is significant. For 2026, a generic drug at a TRICARE retail network pharmacy typically costs roughly $16–$18 for a 30-day supply, while a non-formulary brand-name drug could cost $68 or more, provided it is even approved after the step therapy requirements are met.

## Related terms * **Prior Authorization:** A requirement that your provider gets approval from TRICARE/Express Scripts before certain medications can be dispensed. * **Formulary:** The official list of brand-name and generic drugs covered by TRICARE, divided into tiers based on cost. * **Non-Formulary Drug:** Medications not on the preferred list that usually require a higher copay and often involve step therapy or medical necessity forms. * **Medical Necessity:** Documentation provided by a doctor explaining why a specific brand-name drug is required over a cheaper generic alternative. * **Express Scripts:** The private company contracted by the Defense Health Agency to manage the TRICARE Pharmacy Home Delivery and retail network benefits. * **Tier 3 Drugs:** The highest-cost category of medications on the TRICARE formulary, which almost always require prior authorization or step therapy.

## Sources * TRICARE.mil Pharmacy Page: [https://www.tricare.mil/pharmacy](https://www.tricare.mil/pharmacy) * Express Scripts TRICARE Portal: [https://militaryrx.express-scripts.com/](https://militaryrx.express-scripts.com/) * Defense Health Agency - T-5 Contract Information: [https://health.mil/](https://health.mil/)